Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Kamachali, Reza Darvishi"'
We present an application of Physics-Informed Neural Networks to handle MultiPhase-Field simulations of microstructure evolution. It has been showcased that a combination of optimization techniques extended and adapted from the PINNs literature, and
Externí odkaz:
http://arxiv.org/abs/2407.02230
Autor:
Kamachali, Reza Darvishi, Wallis, Theophilus, Ikeda, Yuki, Saikia, Ujjal, Ahmadian, Ali, Liebscher, Christian H., Hickel, Tilmann, Maaß, Robert
Publikováno v:
Scripta Materialia 238 (2024) 115758
A giant Zn segregation transition is revealed using CALPHAD-integrated density-based modelling of segregation into Fe grain boundaries (GBs). The results show that above a threshold of only a few atomic percent Zn in the alloy, a substantial amount o
Externí odkaz:
http://arxiv.org/abs/2304.13336
Autor:
Ahmadian, Ali, Scheiber, Daniel, Zhou, Xuyang, Gault, Baptiste, Kamachali, Reza Darvishi, Ecker, Werner, Romaner, Lorenz, Dehm, Gerhard, Liebscher, Christian H.
The embrittlement of metallic alloys by liquid metals leads to catastrophic material failure and severely impacts their structural integrity. The weakening of grain boundaries by the ingress of liquid metal and preceding segregation in the solid are
Externí odkaz:
http://arxiv.org/abs/2211.15216
Autor:
Jentzsch, Stefan, Stock, Daniel, Häcker, Ralf, Skrotzki, Birgit, Kamachali, Reza Darvishi, Klingbeil, Dietmar, Kindrachuk, Vitaliy M.
Publikováno v:
In International Journal of Mechanical Sciences 15 December 2024 284
Autor:
Kamachali, Reza Darvishi, Wang, Lei
Publikováno v:
Scripta Materialia 206 (2022) 114226
The elastic energy of mixing for multi-component solid solutions is derived by generalizing Eshelby's sphere-in-hole model for binary alloys. By surveying the dependence of the elastic energy on chemical composition and lattice misfit, we propose a l
Externí odkaz:
http://arxiv.org/abs/2107.00514
Autor:
Zhou, Xuyang, Wei, Ye, Kühbach, Markus, Zhao, Huan, Vogel, Florian, Kamachali, Reza Darvishi, Thompson, Gregory B., Raabe, Dierk, Gault, Baptiste
Grain boundaries (GBs) are planar lattice defects that govern the properties of many types of polycrystalline materials. Hence, their structures have been investigated in great detail. However, much less is known about their chemical features, owing
Externí odkaz:
http://arxiv.org/abs/2106.10027
Autor:
Kamachali, Reza Darvishi
Publikováno v:
RSC Adv., 2020,10, 26728-26741
Systematic microstructure design requires reliable thermodynamic descriptions of each and all microstructure elements. While such descriptions are well established for most bulk phases, thermodynamic assessment of crystal defects is challenged becaus
Externí odkaz:
http://arxiv.org/abs/1907.12231
Autor:
Kamachali, Reza Darvishi, da Silva, Alisson Kwiatkowski, McEniry, Eunan, Ponge, Dirk, Gault, Baptiste, Neugebauer, Joerg, Raabe, Dierk
Publikováno v:
npj Comutational Materials (2020) 191
Segregation to grain boundaries affects their cohesion, corrosion and embrittlement and plays a critical role in heterogeneous nucleation. In order to quantitatively study segregation and phase separation at grain boundaries, we derive a density-base
Externí odkaz:
http://arxiv.org/abs/1905.07970
Autor:
Kamachali, Reza Darvishi
Publikováno v:
Solids 2022, 3(2), 361-373
In this study, the melting and coalescence of Au nanoparticles were investigated using molecular dynamics simulation. The melting points of nanoparticles were calculated by studying the potential energy and Lindemann indices as a function of temperat
Externí odkaz:
http://arxiv.org/abs/1902.01750
Publikováno v:
In Acta Materialia 1 January 2023 242